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Usually the parents of a child can tell by comparison to other children if there might be a vision problem. For most myopic (nearsighted) people, the condition does not start to develop until they are at the age to enter elementary school. Public health nurses are often...

The pupil of the eye is an aperture (hole) in the iris that limits a light-bearing image coming through on its way to being focused on the retina. It typically bounces back and forth between a slight constriction and slight dilation (called "hippus"). The iris (the...

Myopia, or Nearsightedness, is usually caused by an eye that has grown to a larger diameter than it needs to be for the focusing power of the cornea/lens combination at the front of that eye. The degree of myopia is typically...

Only partially and only in the early stages. The earliest symptom of cataract development is Presbyopia (the gradual loss of near vision) which can usually be dealt with by reading glasses or progressive/bifocal glasses. There is often a later "myopic shift" that will...

Many people think that 20/20 means "perfect vision." But "20/20" really just means "normal distance vision." The number ratio we are all familiar with such as "20/20" or "20/40" or even "20/400" are measures of distance visual acuity, or sharpness. They do not give...

Not really. If you are myopic (nearsighted) and wear contact lenses, there is virtually no difference in the blurred near vision from presbyopia compared to somebody without myopia. If you are myopic, however, taking off your glasses can provide better near vision than...

Keratoconus (and the spectrum of keratoconus-like problems of the cornea) are easily missed within the context of a normal, routine eye exam. Without specialized diagnostic equipment, keratoconus is usually only discoverable in its advanced stages using biomicroscopy...

No, in general you can wear your glasses in those situations where you really need to see better than you do without them. Not wearing glasses will not cause any damage to your eyes nor will this worsen (or improve) your uncorrected vision. While there may be other...